How does the regulation of gene expression support continued evolution of more complex organisms?
cells can become specialized within a multicellular organism.
organisms can conserve energy and resources.
cells grow larger to accommodate protein production.
both a and b.

Which of the following are energy solutions that release pollution into the air>

Scientist have long study the earths climate by looking at which of the following? the earths orbit. the earths rock layers. the antarctic ice. the earths oceans.

Lactase is essential for digesting lactose in milk. this enzyme is specific for this sugar. why? molecules and active sites vary in size; only properly sized molecules can fit.there is a precise compatibility between the active site and the lactose molecule.specificity refers to the action of the enzyme, such as hydrolysis, and relatively few molecules can be hydrolyzed.reaction-specific enzymes assume a fit by folding around the most numerous substrate molecules.